IMAP migration in the Microsoft 365 admin center
After you've added your users to Microsoft 365 or Office 365, you can use Internet Message Access Protocol (IMAP) to migrate email for those users from their IMAP-enabled email servers.
Important
Before you can use an IMAP migration for your users, they must have been first added to your Microsoft 365 or Office 365 organization. For instructions, see Add users individually or in bulk.
Before you migrate, read What you need to know about migrating your IMAP mailboxes to Microsoft 365 or Office 365.
Important
IMAP migration in the Microsoft 365 admin center has been replaced by IMAP migration by using the Exchange admin center (EAC). To perform an IMAP migration by using the EAC, see Migrate other types of IMAP mailboxes to Microsoft 365 or Office 365.
To migrate Exchange mail to Microsoft 365 or Office 365, see Use express migration to migrate Exchange mailboxes to Microsoft 365 or Office 365
Related Topics
Prepare your Gmail or Google Apps account for connecting to Outlook and Microsoft 365 or Office 365
Prepare your Outlook.com or Hotmail.com account for IMAP migration